The dissolution plate (also known as electrode plate, tank plate, or electrolysis plate) in the electrolytic cell is an important component of the electrolysis reaction. After long-term use, the surface of the dissolution plate will accumulate deposits such as oxides, dirt, or electrolysis products, which may affect the electrolysis effect. Therefore, regular cleaning of the dissolution plate is a necessary step to maintain the efficiency of the electrolytic cell and extend the service life of the dissolution plate.
Method for cleaning the electrolytic cell dissolution plate:
Here are some common methods for cleaning solvent plates. Choose the appropriate cleaning method based on the different pollutants deposited on the surface of the solvent plate:
1. Physical cleaning
Applicable situation: The surface of the dissolution plate has less dirt, and the sediment is mainly floating and easy to peel off.
Cleaning method:
Turn off the power supply of the electrolytic cell and remove the dissolution plate.
Gently brush the surface of the dissolution plate with a brush (such as a wire brush or nylon brush) to remove loose deposits.
If there are large deposits, they can be gently scraped off with a wooden stick or plastic scraper to avoid scratching the electrode surface.
Rinse the dissolution plate with clean water to ensure there are no residual contaminants.
Dry the dissolution plate or wipe it dry with a soft cloth before putting it back into the electrolytic cell.
2. Chemical cleaning
Applicable situation: There are difficult to remove oxides, salts, or other chemical deposits on the surface of the dissolution plate.
Cleaning method:
Acid washing: Use weak acids (such as dilute hydrochloric acid, dilute sulfuric acid) to remove oxides, metal deposits, and salt deposits. The concentration of acid solution and soaking time should be adjusted according to the material of the dissolution plate. Usually, soak in a 1-5% acid solution for 10-20 minutes, and then rinse with clean water.
Attention: Acidic solutions may cause corrosion to certain metal materials (such as aluminum, zinc, etc.), so the appropriate acid solution and concentration must be selected according to the material of the dissolution plate.
Alkali washing: For situations with oil stains or other organic deposits, a weak alkaline solution (such as sodium hydroxide solution) can be used for cleaning. Alkaline solution can effectively remove oil stains and organic matter deposits.
Method: Soak the dissolution plate in a 10-20% sodium hydroxide solution for 15-30 minutes, then rinse with clean water.
Cleaning agent: For more stubborn dirt, specialized electrolytic equipment can also be used to clean the cleaning agent. Using it according to the product manual can usually effectively remove oxides, salts, oils, etc.
3. Ultrasonic cleaning
Applicable situation: There are small deposits on the surface of the dissolution plate, and traditional physical cleaning methods are ineffective.
Cleaning method:
Place the dissolution plate into the ultrasonic cleaning tank.
Use ultrasonic cleaning equipment and select the appropriate frequency and time for cleaning.
Ultrasonic waves can generate high-frequency vibrations, helping to remove sediment, especially fine impurities on the surface.
After cleaning, rinse with clean water to ensure that there is no residual cleaning solution on the dissolution plate.
4. Electrolytic cleaning
Applicable situation: Suitable for electrolytic cell dissolution plates that require the removal of metal deposits and oxide layers, especially for metal deposits generated during lead, copper, or other electrolysis processes.
Cleaning method:
Put the dissolution plate back into the electrolytic cell and perform reverse electrolysis according to the principle of the electrolytic cell, usually using a lower current.
During the electrolysis process, the sediment on the surface of the dissolution plate will be reduced and shed.
This method can effectively remove metal deposits, but special attention needs to be paid to the current size and electrolysis time to avoid damage to the surface of the dissolution plate.
Precautions for cleaning:
Safety protection: When performing acid or alkali washing, it is necessary to wear appropriate protective equipment such as protective gloves, goggles, and protective clothing to avoid contact with chemical reagents.
Temperature control: During acid and alkali washing, the temperature of the solution can be appropriately increased to enhance the cleaning effect, but the temperature should not exceed the tolerance temperature of the solution to avoid damaging the dissolution plate.
Disposal of cleaning solution: Used acid-base cleaning solution should be properly disposed of according to local environmental regulations to avoid polluting the environment.
Cleaning frequency:
The cleaning frequency of the dissolution plate depends on factors such as the usage of the electrolytic cell, the concentration of the solution, and the material of the dissolution plate. Generally speaking, dissolution plates should be inspected regularly, especially when a large amount of sediment is generated during use. If it is found that the electrolysis efficiency has decreased or there are more deposits on the surface of the dissolution plate, it should be cleaned in a timely manner.
By regularly cleaning the dissolution plate, the working efficiency of the electrolytic cell can be effectively improved, the service life of the dissolution plate can be extended, and the safety of the electrolysis process can be ensured.